You might want to open two files in two separate windows to compare them. Also, if you want to edit two files simultaneously, you need to open them separately. That is why you can change Notepad ...
Friend has a new desktop and has a specific preference for having multiple windows of the same browser open. On Windows 10 I found that's accomplished via: Settings/Taskbar/Combine Buttons on other ...
You undoubtedly know about your browser's incognito mode: a special browser state where the software doesn't keep track of your activities in quite as much detail ...